Reddit mentions of Hobart 770488 Leather Welding Jacket - L

You do not need pants. I just use jeans, and the the apron over a jacket. Here is what I use:

Get one of these for sure.
http://www.amazon.com/3M-Face-piece-Reusable-Respirator-Assembly/dp/B000FTEDMM/ref=pd_bxgy_hi_img_y
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http://www.amazon.com/gp/product/B00328IAO0/ref=oh_details_o03_s02_i00?ie=UTF8&psc=1

Gloves - I bought a few pairs. You will use them up at first, till you learn what not to hold on to :) http://www.amazon.com/gp/product/B000MRQAJG/ref=oh_details_o08_s00_i00?ie=UTF8&psc=1

Jacket has some options. Sleeves and an apron:
http://www.amazon.com/gp/product/B002AKIRIA/ref=oh_details_o06_s00_i01?ie=UTF8&psc=1
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http://www.amazon.com/Welding-Sleeves-Leather-Elastic-Resistant/dp/B002GI9A3C/ref=pd_sim_hi_48

or a plain jacket, but look around. This price on amazon seems high. You might be able to find something like this locally for less.
http://www.amazon.com/Hobart-770488-Leather-Welding-Jacket/dp/B002VECL3W/ref=pd_sim_hi_42

And I use this :http://www.amazon.com/Miller-Genuine-Leather-Indura-Welding/dp/B003IL2RCM/ref=sr_1_10?s=hi&ie=UTF8&qid=1382001569&sr=1-10&keywords=miller+jacket

Jeans. Boots. Welding jacket (which is awesome on multiple levels, more on that in a second). That's about it but this is SoCal so heat is going to be your biggest enemy.

I have spare socks in my bag and one extra set of jeans with two shirts but that's about it.

No Sam Fisher for me, thanks.

I'd highly recommend a welding jacket for anybody, be sure it's the all-leather variety. They're great because they're durable as hell; I've worn one almost every day that it wasn't summer for the past six years and mine is still going strong even after using it for welding for two years. They're fireproof (ok so not really but at the point they're not fire proof your ass is medium rare anyways). They're protection against a lot of different scrapes, cuts, bumps, and other trouble; I've had someone slash at me with a knife and my coat protected me. They're fairly low profile, they're cool in summer, warm in winter, they keep the rain off, they're generally pretty inexpensive, the color blends in to a lot of different environments, you can shear leather off if you need it for something, and they make great pillows.